Ontario · area guide · 10 communities · checked October 8, 2026
Home energy audits, radon and well water testing in Haldimand County
Haldimand County is home to 49,216 people (2021 Census), and 32% of their houses were built before 1961. This guide covers 10 communities, from Caledonia, Dunnville and Hagersville to the smallest hamlets, with the local numbers that shape an energy audit or a home health test.
Population (2021)
49,216
Communities listed
10
Houses built before 1961
32%
Heating degree-days
3,924
Hamilton Airport
How Haldimand County is built
- Before 1961 32%
- 1961–1990 36%
- 1991–2000 12%
- 2001 or later 20%
This page covers Haldimand County, a single-tier municipality between Hamilton and Lake Erie.
Six local guides for Haldimand County
Energy audits and heat pump sizing
Haldimand County at a glance
People and homes
49,216 people and 20,710 private dwellings in 2021, up 7.9% in population since 2016. On census day (May 11, 2021), 10% of the 20,710 private dwellings in Haldimand County were not anyone's permanent home.
Housing
Of the 17,450 houses in Haldimand County (single-detached, semi-detached, row houses, duplexes and mobile homes), 32% were built before 1961 and 68% before 1991, according to the 2021 Census. The typical house dates from 1971–1980.
Climate
Environment and Climate Change Canada's 1981–2010 climate normal at Hamilton Airport (31.3 km from the middle of the area) is 3,924 heating degree-days a year, with a January mean of −5.5°C. The building code's 2.5% January design temperatures for the area run from −15°C to −17°C.
Radon
In Health Canada’s 2012 survey, 2.6% of 116 homes tested in the Haldimand-Norfolk Health Unit were above the guideline. The larger 2024 Cross-Canada survey reports 12.4% (1 in 8) of homes at or above the guideline for Ontario as a whole.
Wells
Free bacteria testing through Public Health Ontario, with bottles from Grand Erie Public Health weekdays 8:30 a.m. to 4:30 p.m. Drop samples off at Grand Erie Public Health in Caledonia (100 Haddington Street) or Dunnville (117 Forest Street), Monday to Thursday, 8:30 a.m. to 4:30 p.m.
Energy advisors
NRCan's list (checked October 8, 2026) shows 22 service organizations registered for postal codes in Caledonia and Dunnville. Confirm they travel to your community.
Heating
Province-wide, 58% of Ontario households heat mainly with natural gas, 18% with electricity, 4% with propane and 1% each with oil and wood (Statistics Canada, 2023); there's no published breakdown for this area alone.
Every community in Haldimand County
Grouped by municipality, with 2021 Census populations. Names come from Natural Resources Canada's geographical names database and Statistics Canada's population centres.
- Haldimand County 49,216Caledonia, Cayuga, Dunnville, Hagersville, Jarvis, Nanticoke, Selkirk, Townsend, York
Who does the work in Haldimand County
- Energy evaluations and heat loss calculations: NRCan's list (checked October 8, 2026) shows 22 registered service organizations for postal codes in Caledonia, Dunnville. See them with phone numbers; confirm they travel to your community.
- Radon: certified measurement and mitigation professionals are listed in the C-NRPP directory ↗.
- Wood stoves and chimneys: WETT-certified professionals are listed in the WETT directory ↗; see wood-burning inspections in Haldimand County.
- Well water: free bacteria tests through the local public health unit; chemistry through a licensed private lab. Details for Haldimand County.
Rebates and financing for Haldimand County homes
Nearby city pages and guides
Sources
- Statistics Canada — 2021 Census population and dwelling counts (table 98-10-0002-01)
- Statistics Canada — 2021 Census, households by period of construction and dwelling type (table 98-10-0233-01)
- Statistics Canada — 2021 Census population centres (table 98-10-0011-01)
- NRCan — Canadian Geographical Names Database (official place names)
- Environment and Climate Change Canada — Canadian Climate Normals 1981–2010
- National Research Council — National Building Code of Canada 2020, Appendix C, Table C-2 (climatic design data)
- Health Canada — Cross-Canada Survey of Radon Concentrations in Homes, final report (2012), Table 5
- NRCan — Service organizations for existing homes (list checked October 8, 2026)
- Land Information Ontario — municipal boundaries (lower and single tier)
- Evict Radon National Study with Health Canada — 2024 Cross-Canada Survey of Radon Exposure (report v1.1)
- Statistics Canada — Census dictionary: private dwelling occupied by usual residents
- Grand Erie Public Health — private well water testing
- Statistics Canada — Households and the Environment Survey 2023, primary heating systems (table 38-10-0286-01)
Planning upgrades in Haldimand County?
Tell us where you are and what you’re planning. We’ll connect you with a registered service organization for your area — no spam, no shared lead lists.